Improvement



D. CTTRELL. weft-Stop Mechanisms for Looms.` N0.149,447.

Patented Apri! 7,1874.

WIE/wwe@ J.

Uivrrnn STATES@ PATENT @Enron l JESSE D. COTTRELL, OF HOFEDALE,MASSACHUSETTS.

IMPROVEMENT IN WEFT-STOP MECHANISMS F'OR LOOLMS.

Specification forming partei' Letters Patent No. 149,447, dated April 7,1874; application tiled March 2S, 1874.

@Asn B.

To all whom it may con-cem Be it known that I, Jnssn D. Cor'rnnLL, ofHopedale, in the county of Vorcester and State of Massachusetts, haveinvented certain new and useful Improvements in Looms; and- I do herebydeclare the following to be a full, clear, and exact description of thesame, reference being had to the accompanying drawings forming part ofthis specification, in which- Figure l is a top-plan view of my,improved loom. Fig. 2 is a sectional view through the line a: x, Fig. l,the lay being thrown back. Fig. 3 is a similar sectional view, the laybeing thrown forward; and Figs. 4, 5, and 6 are views of parts shown indetail.

Similar letters of reference in the accompanying drawings indicate thesame parts.

My invention relates to devices, which, in combination with devicesdescribed in another application now pending, are employed to controlthe take-up mechanism; and also stop the loom when the wett-threadbreaks or is absent.

In the accompanying drawing, A A are the standards or uprights of theloom-frame; and B is the breast-beam, constructed in the ordinary'manner. G is the'lay, pivoted in theY loom-frame, and operated by thecrank-shaft D, in the usual manner. On the front face of the race E areattached brackets F F, the upper ends of which are provided with lugs orprojections c c, in which are pivoted the levers er a, the front ends ofwhich project beyond the race, and the rear ends ot said levers beingprovided with prongs or tines. ln the lower ends of the brackets F F,attached to the race, is journaled, in suitable bearings b b, therock-shaft d, on which is hung the short arm e, which is connected, by arod, j', with a lever, g, pivoted at h to the cross-beam of theloom-frame. j is a roller, attached to a stud projecting from the sideot' the lever g, and freely turning thereon. G is the driving-shaft ofthe loom, provided with a gear-wheel, H, which meshes with a gear-wheel,I, on the crank-shaft. J is a cani, on the driving-shaft r G of theloom, and directly under the roller j on the lever g, so that the latterwill be elevated or depressed by the revolution ofthe driving-shaft. K Kare arms, hung on the rock-shaft d, near its extremities, the oppositeends of said arms being pivoted to the plates m m, which slide in slotsmade through the race. To the upper ends of the plates m m are attachedthe right-angled rods n n, which form the grids.

It will be seen 'from this construction that, as the lay is movedbackward and the shuttle passes over the race, the grids are raised,allowing the free passage ofthe shuttle under them, the shuttlethreadlying on the tines of the lever a. Then the grids descend, they pressthe shuttle-thread upon the tines of the lever a., thus elevating therear end of said lever.

O is a plate, attached to the breast-beam opposite the levers c al, andprovided with a recess, p, having a partition, q, across it. Thepartition is provided with a perforation, if', for for the reception ofthe rounded end sof a latch, t, surrounded by a spring, u', one end ofwhich bears against the partition q, and the other against a shoulder inthe latch t. The upper face ofthe shoulder of the latch t is horizontal,and made iiush lwith the rear part of the lever u, attached to thepartition q. The face ot' the latch is then inclined, to allow theprojection c on the lever u to ride over it. w is a pin, att-ached tothe side of the lever u, which engages in a recess in the front part ofthe latch to hold the latter in place.

By this construction, when there is no breakage or absence of aweft-thread, the rear end oi' the lever a is raised, and strikes in agroove, a', in the outer end of the latch t, driving it-in the recess pof the plate, and throwing down the lever u, which l connect withdevices for stopping the loom, and also for controlling the take-up, asshown in an application now pending, and heretofore referred to.

ln case of breakage or absence of a weftthread, the front end of thelever a is not raised, and the lever passes under the latch t, and theloom ceases to operate.

Having thus described my invention, what l claim isl. rlhe recessedplate o, constructed as set forth, in combination with the lever g,driving-shaft G, provided with the cani J, oonwhole constructed andoperating in the man neoting-rodf', rook-shaft d, grids m n, and ner andfor the purpose'set forth. lever a, substantially as described, and forthe purpose Set forth. J ltSSE D. COTTRELL.

2. In combination with the pronged lever a Witnesses:

upon the lay, the recessed. plate o, provided MELVILLE CHURCH,

withA the latch t, spring u', and lever u, the N. K. ELLSWORTH.

